JPH04104224A - Light control element - Google Patents
Light control elementInfo
- Publication number
- JPH04104224A JPH04104224A JP22288290A JP22288290A JPH04104224A JP H04104224 A JPH04104224 A JP H04104224A JP 22288290 A JP22288290 A JP 22288290A JP 22288290 A JP22288290 A JP 22288290A JP H04104224 A JPH04104224 A JP H04104224A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- control element
- light control
- crystal film
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 53
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 150000004703 alkoxides Chemical class 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- -1 silicon alkoxide Chemical class 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 239000004990 Smectic liquid crystal Substances 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims 1
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 4
- HHFAWKCIHAUFRX-UHFFFAOYSA-N ethoxide Chemical compound CC[O-] HHFAWKCIHAUFRX-UHFFFAOYSA-N 0.000 abstract description 2
- IKNCGYCHMGNBCP-UHFFFAOYSA-N propan-1-olate Chemical compound CCC[O-] IKNCGYCHMGNBCP-UHFFFAOYSA-N 0.000 abstract description 2
- NBTOZLQBSIZIKS-UHFFFAOYSA-N methoxide Chemical compound [O-]C NBTOZLQBSIZIKS-UHFFFAOYSA-N 0.000 abstract 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 18
- 239000011265 semifinished product Substances 0.000 description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004988 Nematic liquid crystal Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000007605 air drying Methods 0.000 description 3
- 229910003437 indium oxide Inorganic materials 0.000 description 3
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 150000004704 methoxides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 125000003544 oxime group Chemical group 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は電圧を印加することにより、光透過率を変化
させることができる調光素子に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a light control element whose light transmittance can be changed by applying a voltage.
［従来の技術１
従来、調光素子としては特表昭６１−５０２１２８号公
報、特開平１−２２９２３２号公報に開示されているよ
うに、液晶をエポキシ樹脂やアクリル系光硬化樹脂など
のポリマー媒体中に分散させてなる液晶膜の両面に電極
を形成した構成が知られている。しかし、これらの液晶
膜に使用されるポリマー媒体は光、特に紫外線に弱く、
また化学的安定性も乏しいため、調光素子に利用した場
合、太陽光線や紫外線にさらされると劣化する問題や寿
命が短いという問題があった。[Prior art 1] Conventionally, as disclosed in Japanese Patent Publication No. 61-502128 and Japanese Unexamined Patent Publication No. 1-229232, as a light control element, liquid crystal is used as a polymer medium such as epoxy resin or acrylic photocurable resin. A structure is known in which electrodes are formed on both sides of a liquid crystal film dispersed in the liquid crystal film. However, the polymer media used in these liquid crystal films are sensitive to light, especially ultraviolet light.
Furthermore, because it has poor chemical stability, when used in a light control element, there are problems in that it deteriorates when exposed to sunlight or ultraviolet rays, and has a short lifespan.
［発明が解決しようとする課題］
本発明は、上記の事情に鑑み、耐光性および化学的安定
性が高く、寿命の長い調光素子を捷供する事を課題とす
る。[Problems to be Solved by the Invention] In view of the above circumstances, an object of the present invention is to provide a light control element that has high light resistance and chemical stability and has a long life.
［！ｌｉｔ！を解決するための手段］
本発明は、金属アルコキシドを主成分としてなる無機コ
ーティング材と液晶とを混合、加熱して得られる相分離
構造を有する液晶膜の両面に電極を形成し、この対向す
る電極の少なくとも一方が透明であることを特徴とする
調光素子である。[! lit! [Means for solving the problem] The present invention forms electrodes on both sides of a liquid crystal film having a phase-separated structure obtained by mixing and heating an inorganic coating material mainly composed of a metal alkoxide and a liquid crystal. This is a light control element characterized in that at least one of the electrodes is transparent.
本発明において、無機コーティング材の主成分が金属ア
ルコキシドであることが、得られる液晶膜の耐光性およ
び化学的安定性を高くするためには重要である。その理
由は、金属アルコキシドを主成分とする無機コーティン
グ材は加熱により無機物となり、この無機物は耐光性お
よび化学的安定性が高いからである。ここで、前記金属
アルコキシドとしては、特に限定されず、例えばＳｔ、
Ａｌ、Ｂ＝ Ｃｅ、Ｇｅ、Ｉ ｎ５ＬａＳＮｂ、Ｓｂ、
Ｓｎ、Ｔａ、Ｔ ｉ、Ｖ、Ｗ、Ｚｒなどのメトキシド、
エトキシド、プロポキシドなどを単独または併用して用
いることができるが、少なくとも主成分がシリコンアル
コキシドであることが好ましい。In the present invention, it is important that the main component of the inorganic coating material is a metal alkoxide in order to improve the light resistance and chemical stability of the resulting liquid crystal film. The reason for this is that an inorganic coating material containing a metal alkoxide as a main component becomes an inorganic substance when heated, and this inorganic substance has high light resistance and chemical stability. Here, the metal alkoxide is not particularly limited, and for example, St,
Al, B= Ce, Ge, In5LaSNb, Sb,
Methoxides such as Sn, Ta, Ti, V, W, Zr,
Although ethoxide, propoxide, etc. can be used alone or in combination, it is preferable that at least the main component is silicon alkoxide.
前記シリコンアルコキシドとしては、下記一般式（１）
％式％（１）
で表されるシリコンアルコキシドを用いることが好まし
い、この場合、上記式（１）中ｎ値が単一のシリコンア
ルコキシドを用いるよりも複数のｎ値のシリコンアルコ
キシドを混合して用いるのが好ましい、前記式（１）中
、Ｒの具体例としてはメチル基、エチル基、ブチル基な
どのアルキル基、シクロヘキシル基、フェニル基、ビニ
ル基、クロロメチル基、Ｔ−メタクリロキシプロピル基
、グリシドキシプロピル基などがあげられるが、これら
に限定されない、なお、前記金属アルコキシドは、アル
コキシド基以外の加水分解性基、例えばアセトキシ基、
オキシム基、エノキシ基、アミノ基、アミド基などを有
するものであってよい。As the silicon alkoxide, it is preferable to use a silicon alkoxide represented by the following general formula (1) % formula % (1). In formula (1), specific examples of R include alkyl groups such as methyl, ethyl, and butyl groups, cyclohexyl groups, phenyl groups, and vinyl. The metal alkoxides include, but are not limited to, hydrolyzable groups other than alkoxide groups, such as acetoxy groups, chloromethyl groups, T-methacryloxypropyl groups, glycidoxypropyl groups, etc.
It may have an oxime group, an enoxy group, an amino group, an amide group, etc.
本発明の、無機コーティング材には、主成分としての金
属アルコキシドの他に、必要に応し形成される液晶膜の
透明性を阻害しない程度の量のシリカ、酸化亜鉛、酸化
チタンなどのような微粉末を添加するようにしてもよい
、これらは紫外線吸収能があるため、形成される液晶膜
の耐光性がより向上するからである。また、必要に応じ
、水、アルコールなどの溶剤、酸などの触媒、増結剤、
着色剤、消泡剤、表面平滑側などを添加するようにして
もよい。In addition to the metal alkoxide as the main component, the inorganic coating material of the present invention may contain silica, zinc oxide, titanium oxide, etc. in an amount that does not impede the transparency of the liquid crystal film formed as necessary. Fine powders may be added, since these have ultraviolet absorbing ability, which further improves the light resistance of the liquid crystal film formed. In addition, water, solvents such as alcohol, catalysts such as acids, thickeners,
A coloring agent, an antifoaming agent, a smooth surface, etc. may be added.
本発明で用いる液晶としては、例えば電場下で分子配向
するネマチック型液晶やスメクチック型液晶などがあげ
られ、これらは単独でまたは複数種を併用して用いるこ
とができる。Examples of liquid crystals used in the present invention include nematic liquid crystals and smectic liquid crystals whose molecules are oriented under an electric field, and these can be used alone or in combination.
本発明では、前記の無機コーティング材と前記の液晶と
を混合、加熱するという簡単な工程によって得られる相
分離構造を有する液晶膜を用いるという特徴を有する。The present invention is characterized in that it uses a liquid crystal film having a phase-separated structure obtained by a simple process of mixing and heating the inorganic coating material and the liquid crystal.
前記の加熱条件は、特に限定するものではないが、６０
〜１７０°Ｃの温度範囲で０．５〜５．０時間加熱を行
うことが望ましい、このようにして得られる相分離構造
を有する液晶膜は、無機コーティング材が加熱されて形
成される無機媒体中に液晶が独立して分散された状態と
なっていて、この独立して存在する液晶の径は、特に限
定されないが、電圧無印加時に光散乱を生じ得るために
は０．１μｍ以上であることが好ましい。The heating conditions mentioned above are not particularly limited, but 60
The liquid crystal film having a phase-separated structure obtained in this way, which is preferably heated for 0.5 to 5.0 hours at a temperature range of ~170°C, is an inorganic medium formed by heating an inorganic coating material. Liquid crystals are independently dispersed therein, and the diameter of the independently existing liquid crystals is not particularly limited, but is 0.1 μm or more in order to cause light scattering when no voltage is applied. It is preferable.
前記液晶の屈折率および無機コーティング材の加熱によ
り得られる無機媒体の屈折率は調光素子の電圧無印加時
の不透明性および電圧印加時の透明性に影響を及ぼすの
で重要である。すなわち、調光素子が電圧無印加時に不
透明で、電圧印加時に透明となるためには、電圧無印加
時にはランダムに配向している液晶の平均屈折率と無機
媒体の屈折率とが異なっていることが必要であり、電圧
印加時には電界方向に沿って配向している液晶の屈折率
と無機媒体の屈折率とがほぼ一致していることが必要で
ある。The refractive index of the liquid crystal and the refractive index of the inorganic medium obtained by heating the inorganic coating material are important because they affect the opacity of the light control element when no voltage is applied and the transparency when a voltage is applied. In other words, in order for a light control element to be opaque when no voltage is applied and transparent when a voltage is applied, the average refractive index of the randomly oriented liquid crystal and the refractive index of the inorganic medium must be different when no voltage is applied. When voltage is applied, it is necessary that the refractive index of the liquid crystal aligned along the direction of the electric field and the refractive index of the inorganic medium substantially match.
本発明の前記の相分離構造を有する液晶膜の厚みは、特
に限定されるものではないが、５〜５０μｍ程度が好ま
しい、また、この液晶膜中の液晶の含有量は、特に限定
されないが、形成される液晶膜の固形分に対し、液晶が
１０〜９０重量％であることが望ましい、液晶の含有量
が１０重量％未満の場合は、電圧無印加時に充分な光散
乱性が得られず、一方、９０重量％を越えると無機媒体
の量が不十分なため、所望の液晶膜が形成できなくなる
ことがあるからである。The thickness of the liquid crystal film having the phase-separated structure of the present invention is not particularly limited, but is preferably about 5 to 50 μm.Also, the content of liquid crystal in this liquid crystal film is not particularly limited, but It is desirable that the liquid crystal content is 10 to 90% by weight based on the solid content of the liquid crystal film to be formed. If the content of liquid crystal is less than 10% by weight, sufficient light scattering properties cannot be obtained when no voltage is applied. On the other hand, if it exceeds 90% by weight, the amount of inorganic medium will be insufficient, and a desired liquid crystal film may not be formed.
本発明の液晶膜の両面に形成される電極としては、特に
限定はされないが、例えば、基板上に真空蒸着法、スパ
ッタリング法またはゾルゲル法などの方法で二酸化スズ
、酸化インジウム、スズとインジウムの酸化物またはパ
ラジウムなどの貴金属などからなる導電膜を形成したも
のがあげられる。前記基板としては、特に限定されない
が、ガラスやプラスチックなどが好ましく、具体的には
、ソーダガラス、ホウケイ酸ガラス、ポリエチレンテレ
フタレート、アクリルなどがあげられる。The electrodes formed on both sides of the liquid crystal film of the present invention are not particularly limited, but for example, tin dioxide, indium oxide, tin and indium oxide can be formed on the substrate by a method such as a vacuum evaporation method, a sputtering method, or a sol-gel method. Examples include those formed with a conductive film made of metal or noble metal such as palladium. The substrate is not particularly limited, but preferably includes glass and plastic, and specific examples include soda glass, borosilicate glass, polyethylene terephthalate, and acrylic.
本発明の液晶膜の両面に形成される電極は少なくとも一
方の側の電極が透明あればよい、すなわち、一方の側の
電極が透明で、他方の側の電極がアルミニウム、金、ニ
ッケル、銅などの金属などの不透明体であってもよい、
そのような調光素子の場合は、透過光ではなく反射光に
対して作用する調光素子となる。The electrodes formed on both sides of the liquid crystal film of the present invention only need to be transparent on at least one side, that is, the electrode on one side is transparent and the electrode on the other side is made of aluminum, gold, nickel, copper, etc. It may be an opaque body such as metal,
In the case of such a light control element, the light control element acts not on transmitted light but on reflected light.
［作用］
無機コーティング材と液晶とを混合、加熱して得られる
相分離構造を有する液晶膜は無機媒体中に液晶が独立し
て分散している膜であり、この無機媒体は液晶膜の耐光
性および化学的安定性を高める作用をする。[Function] A liquid crystal film with a phase-separated structure obtained by mixing and heating an inorganic coating material and a liquid crystal is a film in which liquid crystals are independently dispersed in an inorganic medium, and this inorganic medium increases the light resistance of the liquid crystal film. It has the effect of increasing stability and chemical stability.
［実施例］
以下に、本発明の詳細な説明する。なお、下記実施例中
、「部」は「重量部」を表す。[Example] The present invention will be described in detail below. In addition, in the following examples, "parts" represent "parts by weight".
実施例１
メチルトリメトキシシラン１００部、テトラエトキシシ
ラン７５部、イソプロピルアルコールオルガノゾル（触
媒化成社製の０３ＣＡＬ−１４３２、Ｓ ｉ Ｏｘ ３
０重量％含有）７２部、ジメチルジェトキシシラン３０
部およびイソプロピルアルコール１００部を混合し、さ
らに０．ＩＮのＨＣｌｌ０部と水７０部を添加、攪拌し
て、無機コーティング材を調製した。Example 1 100 parts of methyltrimethoxysilane, 75 parts of tetraethoxysilane, isopropyl alcohol organosol (03CAL-1432 manufactured by Catalysts Kasei Co., Ltd., S i Ox 3
0% by weight) 72 parts, dimethyljethoxysilane 30
part and 100 parts of isopropyl alcohol, and then 0.0 parts of isopropyl alcohol. 0 parts of IN HCl and 70 parts of water were added and stirred to prepare an inorganic coating material.
前記無機コーティング材１００部（固形分２０部）と日
本メルク社製のネマチック液晶（商品名Ｅ−８）２０部
とを混合し、均一に熔解させた後、二酸化スズの導電膜
を有するガラス板（ネサガラス板）上に流延した。風乾
して溶剤を揮発させた後、１２０℃で１時間加熱して、
半製品を得た、半製品中の液晶膜の膜厚は１５μｍであ
った。After mixing 100 parts of the inorganic coating material (solid content: 20 parts) and 20 parts of nematic liquid crystal (trade name E-8) manufactured by Nippon Merck Co., Ltd. and melting the mixture uniformly, a glass plate having a conductive film of tin dioxide was prepared. (Nesa glass plate). After air drying to volatilize the solvent, heating at 120°C for 1 hour,
A semi-finished product was obtained, and the thickness of the liquid crystal film in the semi-finished product was 15 μm.
この半製品を２枚作成し、それらの液晶膜例の表面に透
明接着剤を薄く塗布し、それらを液晶膜側か内側にくる
ように互いに重ね合わせて接合し、調光素子を得た。得
られた調光素子は不透明であったが、電圧を印加すると
透明になり、透明になった時の平行線透過率は５０％の
値を示した。Two semi-finished products were prepared, a transparent adhesive was applied thinly to the surface of the liquid crystal film, and they were stacked and bonded together so that the liquid crystal film was on the inside or the liquid crystal film side, to obtain a light control element. The obtained light control element was opaque, but became transparent when a voltage was applied, and when it became transparent, the parallel line transmittance showed a value of 50%.
実施例２
ジフェニルジェトキシシラン１００部、ジフェニルジメ
トキシシラン５０部、住友セメント社製の超微粒子酸化
亜鉛１０部およびイソプロピルアルコール１００部を混
合し、さらに０．ＩＮのＨＣｌ１０部と水７０部を添加
、攪拌して、無機コーティング材を調製した。Example 2 100 parts of diphenyljethoxysilane, 50 parts of diphenyldimethoxysilane, 10 parts of ultrafine zinc oxide manufactured by Sumitomo Cement Co., Ltd. and 100 parts of isopropyl alcohol were mixed, and 0.0 parts of isopropyl alcohol were mixed. 10 parts of IN HCl and 70 parts of water were added and stirred to prepare an inorganic coating material.
前記無機コーティング材１００部（固形分２０部）と日
本メルク社製のネマチック液晶（商品名Ｅ−４４）３０
部とを混合し、均一に熔解させた後、スズとインジウム
の酸化物の導電膜（以下ＩＴＯ１ｌＩと略す）付きガラ
ス板上に流延した。風乾して溶剤を揮発させた後、１０
０ ”Ｃで１時間加熱して、半製品を得た。半製品中の
液晶膜の膜厚は２２μｍであった。この半製品を２枚作
成し、それらの液晶膜側の表面に透明接着剤を薄く塗布
し、それらを液晶膜側が内側にくるように互いに重ね合
わせて接合し、調光素子を得た。得られた調光素子は不
透明であったが、電圧を印加すると透明になり、透明に
なった時の平行線透過率は７０％の値を示した。100 parts of the inorganic coating material (solid content 20 parts) and nematic liquid crystal (trade name E-44) manufactured by Nippon Merck Co., Ltd.
After uniformly melting, the mixture was cast onto a glass plate coated with a conductive film of tin and indium oxide (hereinafter abbreviated as ITO11I). After air drying and volatilizing the solvent, 10
A semi-finished product was obtained by heating at 0"C for 1 hour. The thickness of the liquid crystal film in the semi-finished product was 22 μm. Two pieces of this semi-finished product were made, and a transparent adhesive was attached to the surface on the liquid crystal film side. A light control element was obtained by applying a thin layer of the agent and bonding them together so that the liquid crystal film side was on the inside.The obtained light control element was opaque, but became transparent when a voltage was applied. When it became transparent, the parallel light transmittance showed a value of 70%.
実施例３
ジフェニルジェトキシシラン１００部、ジフェニルジメ
トキシシラン１００部、住友セメント社製の超微粒子酸
化亜鉛１０部およびイソプロピルアルコール１００部を
混合し、さらにＯ，ＩＮのＨＣｆｆｉ １０部と水７０
部を添加、攪拌して、無機コーティング材を調製した。Example 3 100 parts of diphenyljethoxysilane, 100 parts of diphenyldimethoxysilane, 10 parts of ultrafine zinc oxide manufactured by Sumitomo Cement Co., Ltd. and 100 parts of isopropyl alcohol were mixed, and further 10 parts of O, IN HCffi and 70 parts of water were mixed.
1 part and stirred to prepare an inorganic coating material.
前記無機コーティング材１００部（固形分２５部）と日
本メルク社製のスメクチック液晶（４−ｃｙａｎｏ−４
−ｎ−ａｌｋｙｌｂｉｐｈｅｎｙｌｓ） ２５部とを混
合し、均一に溶解させた後、ＩＴＯ膜付きガラス板上に
流延した。風乾して溶剤を揮発させた後、１００°Ｃで
１時間加熱して、半製品を得た。半製品中の液晶膜の膜
厚は１８μｍであった。この半製品を２枚作成し、それ
らの液晶膜例の表面に透明接着剤を薄り塗布し、それら
を液晶膜側か内側にくるように互いに重ね合わせて接合
し、調光素子を得た。得られた調光素子は不透明であっ
たが、電圧を印加すると透明になり、透明になった時の
平行線透過率は６８％の値を示した。100 parts of the inorganic coating material (solid content 25 parts) and smectic liquid crystal (4-cyano-4) manufactured by Nippon Merck Co., Ltd.
-n-alkylbiphenyls) were mixed and uniformly dissolved, and then cast onto a glass plate with an ITO film. After air drying to volatilize the solvent, it was heated at 100°C for 1 hour to obtain a semi-finished product. The thickness of the liquid crystal film in the semi-finished product was 18 μm. Two semi-finished products were created, a thin layer of transparent adhesive was applied to the surface of the liquid crystal film, and they were stacked and bonded together so that the liquid crystal film was on the inside or the liquid crystal film side, to obtain a light control element. . The obtained light control element was opaque, but became transparent when a voltage was applied, and when it became transparent, the parallel line transmittance showed a value of 68%.
［発明の効果１
本発明の調光素子に用いる液晶膜は無機媒体中に液晶が
独立して分散している膜であり、この無機媒体は耐光性
および化学的安定性が高いため、得られる調光素子は耐
光性および化学的安定性が高く、寿命の長い、優れた調
光素子となる。[Effect of the invention 1 The liquid crystal film used in the light control element of the present invention is a film in which liquid crystals are independently dispersed in an inorganic medium, and this inorganic medium has high light resistance and chemical stability. The light control element has high light resistance and chemical stability, making it an excellent light control element with a long life.
Claims (4)
ィング材と液晶とを混合、加熱して得られる相分離構造
を有する液晶膜の両面に電極を形成し、この対向する電
極の少なくとも一方が透明であることを特徴とする調光
素子。(1) Electrodes are formed on both sides of a liquid crystal film having a phase-separated structure obtained by mixing and heating an inorganic coating material mainly composed of metal alkoxide and liquid crystal, and at least one of the opposing electrodes is transparent. A light control element characterized by:
これらを併用してなる液晶である請求項１記載の調光素
子。(2) The light control element according to claim 1, wherein the liquid crystal is a nematic type liquid crystal, a smectic type liquid crystal, or a combination thereof.
ドである請求項１または２記載の調光素子。(3) The light control element according to claim 1 or 2, wherein the main component of the metal alkoxide is silicon alkoxide.
ｍＳｉ（ＯＲ′）＿４＿−＿ｍ・・・（ I ）（式中、
Ｒは置換または無置換の１価炭化水素基を表し、Ｒ′は
炭素数１〜４のアルキル基を表し、ｎは０〜２の整数を
表す。ただし、ｎが２のとき、Ｒ＿ｍを構成する各々の
Ｒは同一であっても互いに異なっていてもよい。）で表
されるものである請求項３記載の調光素子。(4) Silicon alkoxide has the following general formula (I)R_
mSi(OR')_4_-_m...(I) (in the formula,
R represents a substituted or unsubstituted monovalent hydrocarbon group, R' represents an alkyl group having 1 to 4 carbon atoms, and n represents an integer of 0 to 2. However, when n is 2, each R constituting R_m may be the same or different from each other. ) The light control element according to claim 3, which is represented by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22288290A JPH04104224A (en) | 1990-08-24 | 1990-08-24 | Light control element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22288290A JPH04104224A (en) | 1990-08-24 | 1990-08-24 | Light control element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04104224A true JPH04104224A (en) | 1992-04-06 |
Family
ID=16789365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22288290A Pending JPH04104224A (en) | 1990-08-24 | 1990-08-24 | Light control element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04104224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012521575A (en) * | 2009-03-25 | 2012-09-13 | ユニヴァーシティー オブ タルトゥ | Method for producing surface coating with variable transmittance and electro-optic appliance comprising said coating |
-
1990
- 1990-08-24 JP JP22288290A patent/JPH04104224A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012521575A (en) * | 2009-03-25 | 2012-09-13 | ユニヴァーシティー オブ タルトゥ | Method for producing surface coating with variable transmittance and electro-optic appliance comprising said coating |
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